US1647426A - Process for recovering lead chloride - Google Patents

Process for recovering lead chloride Download PDF

Info

Publication number
US1647426A
US1647426A US185351A US18535127A US1647426A US 1647426 A US1647426 A US 1647426A US 185351 A US185351 A US 185351A US 18535127 A US18535127 A US 18535127A US 1647426 A US1647426 A US 1647426A
Authority
US
United States
Prior art keywords
lead
chloride
sulphate
solution
lead chloride
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US185351A
Inventor
Witter Wilhelm
Nehring Paul
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of US1647426A publication Critical patent/US1647426A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G21/00—Compounds of lead
    • C01G21/16—Halides
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

Definitions

  • This invention relates to a process for recovering valuable lead compounds from materials containing sulphate of lead.
  • our present invention has several essential advantages; above all it is to be stated that our invention allows of extracting from the material under treatment containing lead sulphate, in a far shorter time about twice to thrice the quantity of lead in the form of a pure lead compound (chloride)
  • This important technical progress is realized by treating the material containing lead sulphate with a suitably concentrated solution of sodium chloride (or other chlorides capable of reacting on lead sulphate in the same manner) under conditions of pressure above atmospheric and of temperatures above l00 C.
  • the present invention may be carried out in practice in the follow ing manner:
  • Commercial lead sulphate or any other material containing lead sulphate.
  • it necessary or desired, after being cleaned from adhering soluble substances such as salts, freeacid. etc.. is agitated with a sutlicient or equivalent quantity of a solution of sodium chloride (say of 25 per cent) under a pressure of about 4 to 5 atmospheres at a temperature or" about 140 to 150" C.
  • the reaction is completed (say after 10 to 15 minutes), the mass is settled for a short time, whereupon the liquid containing lead is passed under pressure through a heated filter press,
  • this process can also be used for treating materials which do not contain lead in the form of sulphate, but in sulphide combination, such as, for instance, sulphide ores and their residues, in which case the sulphide is previously converted into sulphate.
  • Process of recovering chloride of lead from materials containing lead sulphate which consists in treating the material with a chloride-solution in a closed vessel at a temperature above 100 C.
  • Process of recovering chloride of lead from materials containing lead sulphate which consists in treating the material with a concentrated solution ot sodium chloride under a pressure of about 4 to 5 atmospheres at a temperature of about 140 to 150 (1, settling and filterprcssing the liquid.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Description

Patented Nov. 1, l27.
'WZLHELM WITTER, 0F HALLE-ON-THE-SAALE, AND PAUL NEHRING, 0F BRUNSWICK,
GERMANY.
PROCESS FOR RECOVERING LEAD CHLORIDE.
N0 Brewing. Application filed April 20, 1927, Serial No. 185,351, and in Germany February 5, 1925.
This invention relates to a process for recovering valuable lead compounds from materials containing sulphate of lead.
In the treatment of sulphide ores containing lead and zinc, or of residues of such ores, it has been proposed to convert the sulphides by known means into sulphates and to heat the mixture thereby resulting with a saturated solution or sodium chloride about half an hour up to 100 (1.; thereupon the hot solution was passed into a cooling vessel where a mixture of lead sulphate and lead chloride was separated, which mixture was submitted to a further metallurgical treatment.
In comparison with this (or any similar) known process our present invention has several essential advantages; above all it is to be stated that our invention allows of extracting from the material under treatment containing lead sulphate, in a far shorter time about twice to thrice the quantity of lead in the form of a pure lead compound (chloride) This important technical progress is realized by treating the material containing lead sulphate with a suitably concentrated solution of sodium chloride (or other chlorides capable of reacting on lead sulphate in the same manner) under conditions of pressure above atmospheric and of temperatures above l00 C.
By way ot example, the present invention may be carried out in practice in the follow ing manner: Commercial lead sulphate (or any other material containing lead sulphate). it necessary or desired, after being cleaned from adhering soluble substances such as salts, freeacid. etc.. is agitated with a sutlicient or equivalent quantity of a solution of sodium chloride (say of 25 per cent) under a pressure of about 4 to 5 atmospheres at a temperature or" about 140 to 150" C. After the reaction is completed (say after 10 to 15 minutes), the mass is settled for a short time, whereupon the liquid containing lead is passed under pressure through a heated filter press,
By cooling the clear solution from the filter press, pure lead chloride will crystallize out. However, before such crystals separate, the lead content of the solution can be precipitated by any ltn own means in metallic form or in form of another lead compound.
As mentioned above, this process can also be used for treating materials which do not contain lead in the form of sulphate, but in sulphide combination, such as, for instance, sulphide ores and their residues, in which case the sulphide is previously converted into sulphate.
It need not be mentioned that the conditions of pressure and temperature stated above by way of example can be varied in a w de range according to the material to be treated. As an essentialfeature our process provides the use of closed vessels wherein the material is treated at temperatures above 100 C. and under pressures above atmospheric with a suitable chloride solution.
What we claim is:
1. Process of recovering chloride of lead from materials containing lead sulphate which consists in treating the material with a chloride-solution in a closed vessel at a temperature above 100 C.
2. Process of recovering chloride of lead.
from materials containing lead sulphate which consists in treating the material with a chloride solution under a pressure above atmospheric and. at a temperature above 100 C., after the reaction being completed settling and tilterpressing the liquid.
3. Process of recovering chloride of lead from materials containing lead sulphate which consists in treating the material with a concentrated solution ot sodium chloride under a pressure of about 4 to 5 atmospheres at a temperature of about 140 to 150 (1, settling and filterprcssing the liquid.
In testimony whereof we have signedour names to this specification.
wiLHELM wrrrna. PAUL NEING.
US185351A 1925-02-05 1927-04-20 Process for recovering lead chloride Expired - Lifetime US1647426A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1647426X 1925-02-05

Publications (1)

Publication Number Publication Date
US1647426A true US1647426A (en) 1927-11-01

Family

ID=7738153

Family Applications (1)

Application Number Title Priority Date Filing Date
US185351A Expired - Lifetime US1647426A (en) 1925-02-05 1927-04-20 Process for recovering lead chloride

Country Status (1)

Country Link
US (1) US1647426A (en)

Similar Documents

Publication Publication Date Title
SU1165238A3 (en) Method of hydrometallurgical processing of raw material containing non-ferrous metals and iron
US1962498A (en) Process of recovering aluminum as aluminum sulphate
US1647426A (en) Process for recovering lead chloride
US1970147A (en) Method of treating recovered sulphur
US2520958A (en) Nickel recovery
US1415346A (en) Ghtjsetts
US3744994A (en) Method of separating copper from nickel
US2831751A (en) Method for recovering nickel from ores
US2303602A (en) Calcium tartrate production
US1039861A (en) Process of making nickel salts and recovering the acid used.
US723158A (en) Process of treating nickel ores, &c.
NO131568B (en)
US2809105A (en) Method of treating mayaritype iron ore
US720927A (en) Process of preparing barium hydrate.
DE592496C (en) Process for the decomposition of multiple salts consisting of alkali sulphates and calcium sulphate
US1350239A (en) Process of producing copper-sulfate solutions from ores
US1191106A (en) Process of making aluminates from raw alunite.
US2232241A (en) Method of producing ammonium sulphamate
US1413045A (en) Process for treating ores of aluminum, especially alunite
US2432223A (en) Process for the elimination of magnesium from insoluble alkaline earth aconitates
US234511A (en) Moeiz weikrich
US2302204A (en) Process for the manufacture and purification of uric acid
DE463238C (en) Process for the production of lead chloride by treating raw materials containing lead sulphate with chloride solutions
US2637700A (en) Method for producing barium salts
US1298481A (en) Process for the treatment of waste soda liquors.